feat: resalta badge de responsables cuando el usuario está asignado

Co-authored-by: aider (openrouter/openai/gpt-5) <aider@aider.chat>

apps/web/src/lib/ui/data/TaskItem.svelte

@@ -332,6 +332,7 @@
 		{:else}
 			<button
 				class="assignees-badge"
+				class:mine={isAssigned}
 				type="button"
 				aria-haspopup="dialog"
 				aria-expanded={showAssignees}
@@ -653,6 +654,24 @@
 		font-size: 12px;
 		line-height: 1;
 	}
+	.assignees-badge.mine {
+		border-color: var(--color-primary);
+		box-shadow: 0 0 0 2px var(--color-primary);
+	}
+	.assignees-badge.mine .icon {
+		position: relative;
+	}
+	.assignees-badge.mine .icon::after {
+		content: "";
+		position: absolute;
+		right: -2px;
+		top: -2px;
+		width: 6px;
+		height: 6px;
+		background: var(--color-primary);
+		border: 2px solid var(--color-surface);
+		border-radius: 50%;
+	}
 	.assignees-badge[aria-expanded="true"] {
 		border-color: var(--color-primary);
 	}